Not to worry, fans of his physique for 300 can have hope that the action star will get his 6'2" self back to that film's 197 lbs. of muscle. "If the script was good, I would do it," Butler says of a rumored sequel – and necessary bulk-up. "I've got to feel that there's a real reason to go there, to do a second one, because I loved the first."

Though he hasn't seen a script yet, Butler said he hopes his character, King Leonidas, is included. "I hope that they write a great script and I hope that I love it," the actor told PEOPLE. "That was my favorite role, and it would be great to go back there and have some fun with it."